<template>
  <div>
    <el-breadcrumb separator-class="ei-icon-arrow-right" name>
  <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item><a href="/">商品管理</a></el-breadcrumb-item>
  <el-breadcrumb-item>参数列表</el-breadcrumb-item>
  </el-breadcrumb>
  <el-card>
    <el-alert show-icon title="注意,只允许为第三级分类设置相关参数" type="warning" :closable="false"></el-alert>
    <el-row class="cat_opt">
      <el-col>
        <span>商品分类</span>
        <el-cascader v-model="selectedCateKeys" :options="catelist"
        :props="cateProps"
        @change="handleChange"
        ></el-cascader>
      </el-col>
    </el-row>
    <el-tabs v-model="activeName" @tab-click="handleTabClick">
      <el-tab-pane label="动态参数" name="many">
        <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible=true">添加参数</el-button>  
        <el-table :data="manyTableData" border stripe>
          <el-table-column type="expand"></el-table-column>
          <el-table-column type="index" label="#"></el-table-column>
          <el-table-column label="参数名称" prop="attr_name"></el-table-column>
          <el-table-column label="操作">
            <template #default="{row}">
              <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(row.attr_id)">编辑</el-button>
              <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
            </template>
          </el-table-column>
        </el-table>      
      </el-tab-pane>
      <el-tab-pane label="静态参数" name="onl">
        <el-button type="primary" size="mini" :disabled="isBtnDisabled" >添加属性</el-button>   
        <el-table :data="onlyTableDate" border stripe>
          <el-table-column type="expand"></el-table-column>
          <el-table-column type="index" label="#"></el-table-column>
          <el-table-column label="属性名称" prop="attr_name"></el-table-column>
          <el-table-column label="操作">
            <template #default="{row}">
              <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(row.attr_id)">编辑</el-button>
              <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
            </template>
          </el-table-column>
        </el-table>     
      </el-tab-pane>
    </el-tabs>
  </el-card>
  
  <el-dialog :title="'添加' + titleText" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
   <el-form
   :model="addForm"
   :rules="addFormRules"
   ref="addFormRef"
   label-width="100px"
   >
  <el-form-item :label="titleText" prop="attr_name">
    <el-input v-model="addForm.attr_name"></el-input>
  </el-form-item>
  </el-form>
    <span slot="footer" class="dialog-footer">
      <el-button @click="addDialogVisible=false">取消</el-button>
      <el-button type="primary" @click="addParms">确定</el-button>
    </span>
  </el-dialog>

  <el-dialog :title="'修改' + titleText" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
   <el-form
   :model="editForm"
   :rules="editFormRules"
   ref="editFormRef"
   label-width="100px"
   >
  <el-form-item :label="titleText" prop="attr_name">
    <el-input v-model="editForm.attr_name"></el-input>
  </el-form-item>
  </el-form>
    <span slot="footer" class="dialog-footer">
      <el-button @click="editDialogVisible=false">取消</el-button>
      <el-button type="primary" @click="editParms">确定</el-button>
    </span>
  </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      catelist: [],
      cateProps: {
        expandTrigger: 'hover',
        value: 'cat_id',
        label: 'cat_name',
        children:'children',
      },
      selectedCateKeys: [],
      activeName: 'many',
      manyTableData: [],
      onlyTableDate: [],
      addDialogVisible: false,
        addForm:{
        attr_name:''
      },
      addFormRules: {
          attr_name: [ 
          {required: true,message:'请输入参数名称',trigger:'blur'} 
          ] 
      },
      editDialogVisible: false,
      editForm: {
        attr_name:'',
      },
      editFormRules: {
        attr_name: [ 
          {required: true,message:'请输入参数名称',trigger:'blur'} 
          ] 
      }
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取失败')
      }
      this.catelist = res.data
    },
  handleChange() {
     this.getParamsData()
    },
    handleTabClick() {
     this.getParamsData()
    },
async getParamsData() {
      if (this.selectedCateKeys.length !== 3) {
        this.selectedCateKeys = []
      return
      }
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
      {params:{sel:this.activeName}}
      )
      if (res.meta.status !== 200) {
        return this.$message.error('获取失败！')
      }
  if (this.activeName === 'many') {
      this.manyTableDate = res.data
  } else {
      this.onlyTableDate = res.data
    }
      // console.log(this.selectedCateKeys);
    },
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    addParms() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) {
          return
        }
        const { data: res } = await this.$http.post(`categories/${this.cateId}/attributes`, {
          attr_name: this.addForm.attr_name,
          attr_sel:this.activeName
        })
        if (res.meta.status !== 201) {
          return this.$message.error('添加参数失败')
        }
        this.$message.success('添加参数成功')
        this.getParamsData()
        this.addDialogVisible=false
      })
    },
    async showEditDialog(attr_id) {
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes/${attr_id}`,
      {params:{ attr_sel:this.activeName}}
      )
      if (res.meta.status !== 200) {
      return this.$message.error('获取参数信息失败')
      }
    this.editForm = res.data
      this.editDialogVisible = true
    },
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    editParms() {
      this.$refs.editForm.validate(async (valid) => {
        if (!valid) {
          return
        }
        const { data: res } = await this.$http.put(
          `categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
          {attr_name:this.editForm.attr_name,attr_sel:this.activeName}
        )
        if (res.meta.status !== 200) {
          return this.$message.error('修改参数失败')
        }
        this.$message.success('修改成功')
        this.getParamsData()
        this.editDialogVisible=fasle
      })
    }
  },
  computed: {
    isBtnDisabled() {
      if (this.selectedCateKeys.length !== 3) {
        return true
      }
      return false
    },
    cateId() {
      if ((this.selectedCateKeys.length === 3)) {
        return this.selectedCateKeys[2]
      }
      return null
    },
    titleText() {
      if (this.activeName === 'many') {
        return '动态参数'
      }
      return '静态属性'
    }
  }
}
</script>

<style lang="less" scoped>
.cat_opt{
  margin: 15px 0;
}
</style>